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Correlation between Mutation Pressure, Selection Pressure, and Occurrence of Ammo Acids

机译:突变压力,选择压力与Ammo酸的发生相关性

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With the help of the empirical mutation table for nucleotides in the Borrelia burgdorferi genome we have performed Monte Carlo simulation of the pure mutation pressure experienced by the genes of the genome. We have examined the divergence of the mutated genes from the ancestral ones and we have constructed MPM1 matrix (Mutation Probability Matrix) of the substitution rates between amino acids of the diverging genes. The results have been compared to mutation data matrix PAM1 PET91 representing mutation and selection data of 16130 homologous genes od different organisms. We have found that the effective survival time of amino acids in organisms follows a power law with respect to frequency of their occurrence in genes. This makes possible to find the effect of the pure mutational pressure and the selection on the amino acid composition of genes. The results are universal in the sense that the survival time of amino acids calculated from the higher order PAMκ matrices (κ > 1) follows the same power law as in the case of PAM1 matrices.
机译:借助于Borrelia Burgdorferi基因组中的核苷酸的经验突变表,我们已经进行了基因组基因所经历的纯突变压力的蒙特卡罗模拟。我们已经研究了来自祖先的突变基因的分歧,并且我们已经构成了发散基因的氨基酸之间的替代率的MPM1基质(突变概率矩阵)。结果与表示16130个同源基因的突变和选择数据不同生物的突变数据矩阵PAM1 PEAM1 PEAM1 PET91进行比较。我们发现有机体中氨基酸的有效存活时间跟随幂律相对于它们在基因中发生的频率。这使得可以找到纯突变压力和选择对基因氨基酸组成的影响。结果是普遍的意义:从高阶PAMκ矩阵(κ1)计算的氨基酸的存活时间遵循与PAM1矩阵的情况相同的电力法。

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